McMahon's already offered to pay for rehab to anybody that has ever been employed by WWF/WWE. I don't think it's up to him to start a union for the wrestlers though...that's their job. This is where Chris Nowinski or whatever his name is comes back into the picture I'm guessing
Well, Nowinski is big on proving head injuries in wrestling and what behaviors they cause so I'm not sure if he'd be in on that.
Vince offered the payment for rehab after the Benoit thing; it's merely a "see, I care!" move to cover his rear. Besides, in the scope of things, so few guys use that. I think to date, like a dozen guys have used it.
Like I said, unless Vince decides to crack down to a degree where guys lose tv and paychecks, enforcing it to the point that top end stars feel the effects, this will continue.
However, I may be in the minority in thinking that it's not Vince's job to keep tabs on what his wrestlers do in their spare time. They're adults; if they can't regulate their own lives, Vince shouldn't have to play baby-sitter. So with all the media attention, he's been painted in an unfair corner.
Regardless, this is a trend that's going to keep going unless the community figures out what to do about it or a union comes along that mandates benefits and an off-season.